vtkLabeledContourPolyDataItem.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkLabeledContourPolyDataItem_h
#define vtkLabeledContourPolyDataItem_h

#include "vtkPolyDataItem.h"
#include "vtkRect.h"                     // For vtkRect/vtkVector/vtkTuple
#include "vtkRenderingContext2DModule.h" // For export macro
#include "vtkSmartPointer.h"             // For vtkSmartPointer
#include "vtkWrappingHints.h"            // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkActor;
class vtkContext2D;
class vtkDoubleArray;
class vtkRenderer;
class vtkTextActor3D;
class vtkTextProperty;
class vtkTextPropertyCollection;
struct PDILabelHelper;

class VTKRENDERINGCONTEXT2D_EXPORT VTK_MARSHALAUTO vtkLabeledContourPolyDataItem
  : public vtkPolyDataItem
{
public:
  vtkTypeMacro(vtkLabeledContourPolyDataItem, vtkPolyDataItem);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  static vtkLabeledContourPolyDataItem* New();

  bool Paint(vtkContext2D* painter) override;

  virtual void SetTextProperty(vtkTextProperty* tprop);


  virtual void SetTextProperties(vtkTextPropertyCollection* coll);
  virtual vtkTextPropertyCollection* GetTextProperties();


  virtual vtkDoubleArray* GetTextPropertyMapping();
  virtual void SetTextPropertyMapping(vtkDoubleArray* mapping);


  vtkSetMacro(LabelVisibility, bool);
  vtkGetMacro(LabelVisibility, bool);
  vtkBooleanMacro(LabelVisibility, bool);


  vtkSetMacro(SkipDistance, double);
  vtkGetMacro(SkipDistance, double);

protected:
  vtkLabeledContourPolyDataItem();
  ~vtkLabeledContourPolyDataItem() override;

  virtual void ComputeBounds();

  void Reset();

  bool CheckInputs();
  bool CheckRebuild();
  bool PrepareRender();
  bool PlaceLabels();
  bool ResolveLabels();
  virtual bool CreateLabels();
  bool RenderLabels(vtkContext2D* painter);

  bool AllocateTextActors(vtkIdType num);
  bool FreeTextActors();

  double SkipDistance;

  bool LabelVisibility;
  vtkIdType NumberOfTextActors;
  vtkIdType NumberOfUsedTextActors;
  vtkTextActor3D** TextActors;

  PDILabelHelper** LabelHelpers;

  vtkSmartPointer<vtkTextPropertyCollection> TextProperties;
  vtkSmartPointer<vtkDoubleArray> TextPropertyMapping;

  vtkTimeStamp LabelBuildTime;

private:
  vtkLabeledContourPolyDataItem(const vtkLabeledContourPolyDataItem&) = delete;
  void operator=(const vtkLabeledContourPolyDataItem&) = delete;

  struct Private;
  Private* Internal;
};

VTK_ABI_NAMESPACE_END
#endif